Two-Phase Fluid Dynamics in Proton Exchange Membrane Fuel Cells : Counter-Flow Liquid Inlets and Gas Outlets at the Electrolyte-Cathode Interface
Yang, Danan LU ; Beale, Steven B. ; Garg, Himani LU
and Andersson, Martin
LU
(2024)
In Journal of the Electrochemical Society
171(10).
- Abstract
Understanding the counter-flow of liquid inlet and gas outlet at the interface between the electrolyte and cathode gas diffusion layer (GDL) is crucial for water management in proton exchange membrane fuel cells. Existing studies typically overlook air outlets and assume a fixed liquid inlet direction. This study uses a volume of fluid method to model two-phase interactions in a T-shaped GDL and gas channel (GC) assembly, with GDL geometry derived from nano-computer tomography. Considering potential electrode deformations, such as local cracks and blockages, this research investigates the impact of the size and shape of liquid invasion on the liquid-gas behavior in the cathode GDL and GC using five liquid injection configurations.... (More)
Understanding the counter-flow of liquid inlet and gas outlet at the interface between the electrolyte and cathode gas diffusion layer (GDL) is crucial for water management in proton exchange membrane fuel cells. Existing studies typically overlook air outlets and assume a fixed liquid inlet direction. This study uses a volume of fluid method to model two-phase interactions in a T-shaped GDL and gas channel (GC) assembly, with GDL geometry derived from nano-computer tomography. Considering potential electrode deformations, such as local cracks and blockages, this research investigates the impact of the size and shape of liquid invasion on the liquid-gas behavior in the cathode GDL and GC using five liquid injection configurations. Simulations also incorporate GDL gas outlets, integrating them with a tailored liquid inlet setup. Results show that the injection site and configuration significantly affect water behavior in the GDL, affecting saturation, stabilization, and breakthrough, followed by drainage in the GCs. Comparisons of simulations with and without air outflow show distinct counter-flow interactions, highlighting variations in water distribution and discrepancies in two-phase transport across the GCs.
(Less)
- author
- Yang, Danan
LU
; Beale, Steven B.
; Garg, Himani
LU
and Andersson, Martin
LU
- organization
- publishing date
- 2024-10-03
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- gas channel, gas diffusion layer, liquid inlet/gas outlet, PEMFC, volume of fluid method, water saturation
- in
- Journal of the Electrochemical Society
- volume
- 171
- issue
- 10
- article number
- 104501
- pages
- 15 pages
- publisher
- Electrochemical Society
- external identifiers
-
- scopus:85206239650
- ISSN
- 0013-4651
- DOI
- 10.1149/1945-7111/ad7d3d
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2024 The Author(s). Published on behalf of The Electrochemical Society by IOP Publishing Limited.
- id
- f2a83e4d-919b-4fe7-abdd-dafbe85f74ae
- date added to LUP
- 2024-10-24 16:14:37
- date last changed
- 2024-10-28 10:28:40
@article{f2a83e4d-919b-4fe7-abdd-dafbe85f74ae,
abstract = {{<p>Understanding the counter-flow of liquid inlet and gas outlet at the interface between the electrolyte and cathode gas diffusion layer (GDL) is crucial for water management in proton exchange membrane fuel cells. Existing studies typically overlook air outlets and assume a fixed liquid inlet direction. This study uses a volume of fluid method to model two-phase interactions in a T-shaped GDL and gas channel (GC) assembly, with GDL geometry derived from nano-computer tomography. Considering potential electrode deformations, such as local cracks and blockages, this research investigates the impact of the size and shape of liquid invasion on the liquid-gas behavior in the cathode GDL and GC using five liquid injection configurations. Simulations also incorporate GDL gas outlets, integrating them with a tailored liquid inlet setup. Results show that the injection site and configuration significantly affect water behavior in the GDL, affecting saturation, stabilization, and breakthrough, followed by drainage in the GCs. Comparisons of simulations with and without air outflow show distinct counter-flow interactions, highlighting variations in water distribution and discrepancies in two-phase transport across the GCs.</p>}},
author = {{Yang, Danan and Beale, Steven B. and Garg, Himani and Andersson, Martin}},
issn = {{0013-4651}},
keywords = {{gas channel; gas diffusion layer; liquid inlet/gas outlet; PEMFC; volume of fluid method; water saturation}},
language = {{eng}},
month = {{10}},
number = {{10}},
publisher = {{Electrochemical Society}},
series = {{Journal of the Electrochemical Society}},
title = {{Two-Phase Fluid Dynamics in Proton Exchange Membrane Fuel Cells : Counter-Flow Liquid Inlets and Gas Outlets at the Electrolyte-Cathode Interface}},
url = {{http://dx.doi.org/10.1149/1945-7111/ad7d3d}},
doi = {{10.1149/1945-7111/ad7d3d}},
volume = {{171}},
year = {{2024}},
}